Wave packet pseudomodes of variable coefficient differential operators
نویسندگان
چکیده
منابع مشابه
Wave packet pseudomodes of variable coefficient differential operators
The pseudospectra of non-selfadjoint linear ordinary differential operators with variable coefficients are considered. It is shown that when a certain winding number or twist condition is satisfied, closely related to Hörmander’s commutator condition for partial differential equations, 3-pseudoeigenfunctions of such operators for exponentially small values of 3 exist in the form of localized wa...
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ژورنال
عنوان ژورنال: Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
سال: 2005
ISSN: 1364-5021,1471-2946
DOI: 10.1098/rspa.2005.1500